This question has also been asked and answered here:
How long does Marijuana stay in your system?
6 Sep 2009
As a rough guide: if you smoke the occasionally joint, it'll stay in your system for up to 10 days. If you smoke regularly, up to 45 days and if you smoke constantly, 90 days.
As for being detectable in a drug test, well this depends on the type of drug test. Urine test will detect up to a month prior but a blood test will show positive if you've smoked any weed in the last 6 months.
Also important to note that marijuana residue is stored in the fat cells, so if you're skinny or have a high metabolism, the time it takes to leave your system may be reduced.
Search for questions
Still looking for answers? Try searching for what you seek or ask your own question.
i have to take 6lb drug test once a every two weeks what will it ever show up as and how long dosee it stay n y0ur system
2 answers • 5 Jan 2010
my girlfriend does not take pills of any kind... she hates them.. but somehow a drug test came back positives for diazapines! how is this possible ...
3 answers • 13 Aug 2010
I suspect my teen of trying pot and possibly coke at a party a week ago. would a pee test show it?
2 answers • 15 Mar 2011
I used to use marijuana daily and now must pass a urine test for a job. I am 6 feet 2 inches and 180 lbs. I exercise daily and have a fairly fast ...
3 answers • 26 Apr 2011
how long does it stay in your system for, i have test in 2 days
1 answer • 12 Feb 2012